121201516 has 12 divisors (see below), whose sum is σ = 212195088. Its totient is φ = 60574352.

The previous prime is 121201489. The next prime is 121201519. The reversal of 121201516 is 615102121.

It is a junction number, because it is equal to n+sod(n) for n = 121201493 and 121201502.

It is not an unprimeable number, because it can be changed into a prime (121201519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6705 + ... + 16951.

It is an arithmetic number, because the mean of its divisors is an integer number (17682924).

Almost surely, 2^121201516 is an apocalyptic number.

It is an amenable number.

121201516 is a deficient number, since it is larger than the sum of its proper divisors (90993572).

121201516 is a wasteful number, since it uses less digits than its factorization.

121201516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13208 (or 13206 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121201516 is about 11009.1560076148. The cubic root of 121201516 is about 494.8831693803.

Adding to 121201516 its reverse (615102121), we get a palindrome (736303637).

The spelling of 121201516 in words is "one hundred twenty-one million, two hundred one thousand, five hundred sixteen".